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NHRA Chassis Certification

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  • Brian Oatway
    replied
    I found a pic on my phone, not a super pic of the welds but a nice pic of some snot in one of them that was where I embedded the tip of my tungsten and had to grind it out. I'm sure I have some better pics at home

    Click image for larger version

Name:	Cage Welds.jpg
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ID:	518920

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  • Brian Oatway
    replied
    Originally posted by mbramble View Post
    Well, show us some photos so we can inspect the welds for ya !!
    I'll find some pics to put up but I can hear it already......
    1. You are not a professional welder and should not be making these welds.
    2. This type of work can only be done by a real chassis builder and not by a hobbyist in a residential garage.
    3. etc


    I get and admire the pride, quality and eye towards safety you guys display towards your craft but some of you are a little rough on us shade tree guys!!
    Last edited by Brian Oatway; 03-30-2015, 08:04 AM.

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  • mbramble
    replied
    Well, show us some photos so we can inspect the welds for ya !!

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  • Brian Oatway
    replied
    I passed my 8.50 Chassis Certification yesterday.

    I had been in contact with the inspector emailing him pictures for review and comment as I went along so I was pretty confident that everything would be OK, but I was sill a bit nervous since this was my first cage.

    The inspection only took about 10 minutes. They checked the diameter of every tube with a slip over gauge and they checked the thickness of every tube with a sonic tester. They also visually verified all of the floor plates and gussets but they did not spend time looking at the welds. If they looked at the welds at all it was a very casual type of thing.

    There was another car looking for a 6.50 cert that they were much more thorough with but even that car if they were inspecting welds it was a visual check only but I will say the welds on that car looked ALOT nicer than mine!!!

    Very happy it passed inspection but a little disappointed that the welds didn't even get a look.
    Last edited by Brian Oatway; 03-30-2015, 06:57 AM.

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  • gocirino
    replied
    Both... of course!

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  • Brian Oatway
    replied
    Gotya.....did they use it to verify welds or were they just checking tube wall thickness?

    It's interesting that a track will issue a chassis certification sticker that is good anywhere but different tracks use different inspection procedures.

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  • gocirino
    replied
    Depends whether the track can afford a sonic tester. Mine was a 68 Camaro. Here's a link for the sonic tester unit.
    http://www.checkline.com/product/PR-82

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  • Brian Oatway
    replied
    Thanks for replying.

    The replies are exactly where my confusion is coming in. I've had people tell me that it's just visual and others tell me they do some testing of the welds.

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  • Cgotto6
    replied
    Originally posted by gocirino View Post
    Just did one recently. Certed to 8.5 ET... They did visual and ultrasonic test on it.
    What exactly is the ultrasonic test? I have never seen one administered. Also, what car did you just get that inspection done on?

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  • gocirino
    replied
    Just did one recently. Certed to 8.5 ET... They did visual and ultrasonic test on it.

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  • H80N
    replied
    NHRA Rulebook

    Originally posted by Brian Oatway View Post
    I need to upgrade the roll bar in my car to a 10pt roll cage. The cage needs to pass an NHRA Chassis Certification inspection.

    Has anybody been through one of these inspections in the past? What exactly will they be looking at or looking for? Is it simply a visual inspection?

    The rules are pretty clear on tube dimensions and locations and the cage is chromoly so it will need to be tig'd.
    Here is a good place to start..

    You could always get in touch with one of the Tech Support Contact people to answer your questions..

    http://www.nhraracer.com/content/gen...636&zoneid=132


    if you are a current member you can download the rulebook here..

    http://www.nhraracer.com/content/general.asp?articleid=47000&zoneid=132



    Last edited by H80N; 12-04-2014, 08:38 AM.

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  • Brian Oatway
    started a topic NHRA Chassis Certification

    NHRA Chassis Certification

    I need to upgrade the roll bar in my car to a 10pt roll cage. The cage needs to pass an NHRA Chassis Certification inspection.

    Has anybody been through one of these inspections in the past? What exactly will they be looking at or looking for? Is it simply a visual inspection?

    The rules are pretty clear on tube dimensions and locations and the cage is chromoly so it will need to be tig'd.
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